From: Gao Xiang <hsiangkao@linux.alibaba.com>
To: Jiucheng Xu <jiucheng.xu@amlogic.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
jianxin.pan@amlogic.com, tuan.zhang@amlogic.com,
Gao Xiang <xiang@kernel.org>,
linux-erofs@lists.ozlabs.org,
Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH] block: avoild hang when bio_list is non-NULL in submit_bio_wait()
Date: Tue, 3 Mar 2026 10:11:38 +0800 [thread overview]
Message-ID: <6e5aa87c-f3bb-4ae9-8700-27f7f1a9d7b2@linux.alibaba.com> (raw)
In-Reply-To: <b2ad3f3f-105e-4171-b735-84051906cfb5@amlogic.com>
On 2026/3/3 10:03, Jiucheng Xu wrote:
>
>
...
>>
>>> that need to use GFP_NOIO.
>>
>> Yes, it should make vm_map_ram() in the end_io path use
>> GFP_NOIO instead.
>>
>> Jiucheng, could you add memalloc_noio_{save,restore}() to
>> wrap up this path?
>
> Thanks for Christoph's and Xiang's comments, I will try it. Thanks!
Just one more note: just wrap up z_erofs_decompressqueue_work() in
z_erofs_decompress_kickoff() with memalloc_noio_{save,restore}() is
enough.
...
memalloc_noio_save()
z_erofs_decompressqueue_work()
memalloc_noio_restore()
>
> Best Regards,
> Jiucheng
next prev parent reply other threads:[~2026-03-03 2:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-02 2:51 Jiucheng Xu via B4 Relay
2026-03-02 13:50 ` Christoph Hellwig
2026-03-02 14:23 ` Gao Xiang
2026-03-02 14:29 ` Christoph Hellwig
2026-03-02 14:31 ` Gao Xiang
2026-03-03 2:03 ` Jiucheng Xu
2026-03-03 2:11 ` Gao Xiang [this message]
2026-03-03 2:17 ` Jiucheng Xu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=6e5aa87c-f3bb-4ae9-8700-27f7f1a9d7b2@linux.alibaba.com \
--to=hsiangkao@linux.alibaba.com \
--cc=axboe@kernel.dk \
--cc=hch@infradead.org \
--cc=jianxin.pan@amlogic.com \
--cc=jiucheng.xu@amlogic.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-erofs@lists.ozlabs.org \
--cc=linux-kernel@vger.kernel.org \
--cc=tuan.zhang@amlogic.com \
--cc=xiang@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®